Electronic power-assisted steering device for tricycle

Abstract

The electronic power-assisted steering device for the tricycle belongs to the technical field of tricycles and comprises a steering wheel, a locking assembly is arranged on the left side of the steering wheel, an acting assembly is arranged on the inner side of the steering wheel, a transmission joint is fixed to the right side of the steering wheel, and a connecting rod is fixed to the bottom of the transmission joint. A power assisting mechanism is arranged on the outer side of the connecting rod, a driving assembly is arranged at the bottom of the connecting rod, a connecting plate is fixed to the driving assembly, a transmission assembly is arranged on the right side of the connecting plate, an adjusting rod is fixed to the transmission assembly, a stabilizing cylinder is rotationally connected to the outer side of the adjusting rod, and a lubricating mechanism is arranged on the left side of the stabilizing cylinder. According to the electronic power-assisted steering device for the tricycle, through the arrangement of the power-assisted mechanism, the steering effect is improved, the unfolding disc is controlled through the locking assembly, the steering effect of the tricycle is improved, through the arrangement of the lubricating mechanism, the steering effect of the device is improved, and the steering effect of the whole device is good.

Description

Technical Field

[0001] The invention relates to the technical field of tricycles, in particular to an electronic power steering device for a tricycle. Background Art

[0002] A tricycle is a means of transportation with three wheels, which is mainly used to carry people or goods and is mainly used to transport goods or passengers over short distances. Traditional tricycle steering systems generally have problems of heavy steering and low sensitivity, which seriously affect the driving comfort of the driver.

[0003] For example, a Chinese patent (publication number: CN112455589B) discloses an arched steering device for an electric tricycle, comprising a handle, a connecting pull wire, an arc rack, an arched track, a connecting cylinder, a steering drive shaft and a fan-shaped tooth, wherein the arched track is composed of two sections of straight track and one section of arc track, the two straight track are respectively connected to the two ends of the arc track, the arc rack is placed inside the arc track, an arc-shaped through groove is provided on the inner side surface of the arc track, the fan-shaped tooth is located on the inner side of the arched track, teeth are provided on the arc surface of the fan-shaped tooth, and are meshed with the arc rack, the steering drive shaft is connected to the center of the fan-shaped tooth, a vertical slide groove is provided on one side surface of the linear track, one end of the two handles are respectively placed inside the two linear tracks, and the other end of the handles pass outward through the vertical slide groove, the invention realizes the steering of the tricycle through the forward and backward push-pull action of the left and right hands, and the operation is simpler, more convenient, and easy to control.

[0004] This patent realizes quick steering by pushing and pulling the handle, which improves the convenience of steering. However, the steering transmission of this patent is relatively large, and hand shaking is likely to occur during steering, which is inconvenient to use. Therefore, an electronic power steering device for a tricycle is proposed to solve the above-mentioned problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an electronic power steering device for a tricycle, which has the advantages of good use effect and solves the problem of inconvenient steering.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electronic power steering device for a tricycle, comprising a steering wheel, a locking assembly extending to the inner side of the steering wheel is provided on the left side of the steering wheel, an action assembly is provided on the inner side of the steering wheel, a transmission joint is fixed on the right side of the steering wheel, a connecting rod is fixed on the bottom of the transmission joint, a power-assisting mechanism is provided on the outer side of the connecting rod, a driving assembly is provided on the bottom of the connecting rod, a connecting plate is fixed on the driving assembly, a transmission assembly is provided on the right side of the connecting plate, an adjusting rod is fixed on the transmission assembly, a stabilizing cylinder is rotatably connected to the outer side of the adjusting rod, a lubricating mechanism is provided on the left side of the stabilizing cylinder, an upper and lower stabilizing plates are fixed on the outer side of the adjusting rod, a linkage rod is fixed on the inner side of the two stabilizing plates, and a wheel is rotatably connected between the two linkage rods;

[0007] The power-assisting mechanism includes a torque sensor fixed to the outer side of the connecting rod, an electric motor is fixed to the top of the torque sensor, an electronic control unit is fixed to the top of the motor, the driving assembly includes a connecting joint fixed to the bottom of the connecting rod, a rotating rod is fixed to the bottom of the connecting joint, a locking sleeve is rotatably connected to the outer side of the rotating rod, a fixed cylinder is fixed to the right side of the locking sleeve, a displacement rod meshing with the rotating rod is slidably connected in the fixed cylinder, and a connecting plate is fixed to the outer side of the displacement rod.

[0008] Furthermore, the locking assembly includes an outer shell fixed to the left side of the steering wheel, a sliding plate slidably connected to the inner cavity wall on the right side of the outer shell, an extension plate extending to the inner side of the steering wheel is fixed to the top of the sliding plate, a supporting spring is fixed to the left side of the sliding plate, a limiting plate slidably connected to the outer shell is fixed to the left side of the supporting spring, and a movable plate is fixed to the left side of the limiting plate.

[0009] Furthermore, a sliding channel is provided on the left side of the shell, a limiting hole communicating with the sliding channel is provided on the shell, the movable plate is matched with the sliding channel, and the limiting plate is matched with the limiting hole.

[0010] Furthermore, the action component includes two front and rear expansion plates slidably connected to the inner side of the steering wheel, an expansion plate is fixed to the opposite sides of the two expansion plates, a fixing block is fixed to the inner cavity wall on the right side of the steering wheel, and columns plugged into the expansion plate are fixed on the left and right sides of the fixing block, an elastic spring wrapped around the outside of the column is fixed between the expansion plate and the fixed block, a locking plate is fixed to the bottom of the expansion plate, a connecting plate is fixed to the top of the extension plate, the inner side of the connecting plate is slidably connected to the limiting column, and an action block movably connected to the locking plate is fixed on the top of the limiting column, and a return spring wrapped around the outside of the limiting column is fixed between the action block and the connecting plate.

[0011] Furthermore, a limiting channel is provided on the inner side of the steering wheel, the expansion plate is slidably connected to the steering wheel through the limiting channel, a placement opening connected to the limiting channel is provided on the outer side of the steering wheel, the expansion plate is located on the inner side of the placement opening, and the expansion plate is flush with the outer side of the steering wheel.

[0012] Furthermore, a locking opening is provided at the bottom of the locking plate, the action block is located inside the locking opening, and the action block is a triangular prism structure.

[0013] Furthermore, the transmission assembly includes a connecting frame fixed to the right side of the connecting plate, a fixed column is fixed on the inner side of the connecting frame, a connecting sleeve is rotatably connected to the outer side of the fixed column, a fixed sleeve is fixed to the right side of the connecting sleeve, a movable block is slidably connected to the right side of the fixed sleeve, and a ring fixed to the outer side of the adjusting rod is fixed to the right side of the movable block.

[0014] Furthermore, the lubrication mechanism includes a protective cover fixed to the left side of the stabilizing cylinder, a storage box is fixed on the inner side of the protective cover, a pump is fixed on the top of the storage box, an input pipe connected to the adjusting rod is fixed to the output port of the pump, and the bottom of the storage box is connected to an output pipe connected to the bottom of the stabilizing cylinder.

[0015] Furthermore, a liquid outlet is provided on the inner side of the regulating rod, the input pipe is connected with the regulating rod through the liquid outlet, the regulating rod is provided with a plurality of liquid outlets connected with the liquid outlet, and the liquid outlets are connected with the inner cavity of the stabilizing cylinder.

[0016] Furthermore, a collecting port is provided at the bottom of the stabilizing cylinder, and the output pipe is connected to the stabilizing cylinder through the collecting port. Sealed bearings rotatably connected to the outer side of the adjusting rod are fixed on both the upper and lower sides of the stabilizing cylinder.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0018] The electronic power steering device for a tricycle realizes the electric power-assist function of the tricycle by setting a power-assist mechanism, which is beneficial to improving the steering effect; the deployment plate is controlled by a locking component, so that the extension of the steering wheel force arm is realized, thereby reducing the force required for steering, which is beneficial to improving the steering effect of the tricycle; the lubrication mechanism is set to facilitate lubrication of the adjustment rod and the stabilizer cylinder, thereby facilitating reduction of wear caused by wheel steering, thereby facilitating improvement of the steering effect of the device, and facilitating improvement of the steering effect of the tricycle; the overall device has good use effect and good steering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2It is a schematic diagram of the three-dimensional structure of the locking assembly of the present invention;

[0021] Figure 3 It is a side view structural diagram of the functional components of the present invention;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the transmission assembly of the present invention;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the lubrication mechanism of the present invention;

[0024] Figure 6 It is a schematic diagram of the connection structure between the adjusting rod and the stabilizing cylinder of the present invention.

[0025] In the figure: 1 steering wheel, 2 locking assembly, 201 housing, 202 sliding plate, 203 extension plate, 204 support spring, 205 limit plate, 206 movable plate, 3 action assembly, 301 expansion plate, 302 expansion plate, 303 fixed block, 304 plug column, 305 elastic spring, 306 card plate, 307 connecting plate, 308 limit column, 309 action block, 310 reset spring, 4 transmission joint, 5 connecting rod, 6 torque sensor, 7 motor, 8 electronic control unit, 9 Connecting joint, 10 rotating rod, 11 locking sleeve, 12 fixed cylinder, 13 displacement rod, 14 connecting plate, 15 transmission assembly, 1501 connecting frame, 1502 fixed column, 1503 connecting sleeve, 1504 fixed sleeve, 1505 movable block, 1506 collar, 16 adjusting rod, 17 stabilizing cylinder, 18 lubrication mechanism, 1801 protective cover, 1802 storage box, 1803 pump, 1804 input pipe, 1805 output pipe, 19 stabilizing plate, 20 linkage rod, 21 wheel. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1 In this embodiment, an electronic power steering device for a tricycle includes a steering wheel 1, a locking assembly 2 extending to the inner side of the steering wheel 1 is provided on the left side of the steering wheel 1, an action assembly 3 is provided on the inner side of the steering wheel 1, a transmission joint 4 is fixed on the right side of the steering wheel 1, a connecting rod 5 is fixed at the bottom of the transmission joint 4, a power assist mechanism is provided on the outer side of the connecting rod 5, a driving assembly is provided at the bottom of the connecting rod 5, a connecting plate 14 is fixed on the driving assembly, and a transmission assembly 15 is provided on the right side of the connecting plate 14.

[0028] It can be found that by setting up the power-assisting mechanism and the driving assembly, the rotation effect of the steering wheel 1 is improved, which is beneficial to improving the steering effect of the vehicle and avoiding excessive vibration that affects hand operation. By setting up the transmission assembly 15, the stable rotation of the wheel 21 is facilitated, which is beneficial to the stable use of the device.

[0029] An adjusting rod 16 is fixed to the transmission assembly 15, and a stabilizing cylinder 17 is rotatably connected to the outer side of the adjusting rod 16. Sealed bearings rotatably connected to the outer side of the adjusting rod 16 are fixed to the upper and lower sides of the stabilizing cylinder 17. A lubrication mechanism 18 is provided on the left side of the stabilizing cylinder 17. An upper and lower stabilizing plate 19 are fixed to the outer side of the adjusting rod 16, and a linkage rod 20 is fixed to the inner side of the two stabilizing plates 19. A wheel 21 is rotatably connected between the two linkage rods 20.

[0030] It can also be found that the provision of the sealed bearing is conducive to the stable rotation of the adjusting rod 16 and is also conducive to preventing the lubricating liquid in the stabilizing cylinder 17 from escaping, which is conducive to improving the stability of the device and improving the use effect of the device.

[0031] The power-assisting mechanism includes a torque sensor 6 fixed to the outer side of the connecting rod 5, a motor 7 is fixed to the top of the torque sensor 6, an electronic control unit 8 is fixed to the top of the motor 7, and a driving assembly includes a connecting section 9 fixed to the bottom of the connecting rod 5, a rotating rod 10 is fixed to the bottom of the connecting section 9, a locking sleeve 11 is rotatably connected to the outer side of the rotating rod 10, a fixed cylinder 12 is fixed to the right side of the locking sleeve 11, a displacement rod 13 meshing with the rotating rod 10 is slidably connected in the fixed cylinder 12, and a connecting plate 14 is fixed to the outer side of the displacement rod 13.

[0032] In this embodiment, the torque is detected by setting the torque sensor 6, and the motor 7 is controlled by the electronic control unit 8, so as to achieve stable implementation of the electronic power steering function, which is beneficial to improving the steering effect of the device, thereby improving the use effect of the device, reducing the vibration feeling of the device steering, and improving the stability during hand operation.

[0033] See also Figure 2 In order to ensure the stable use of the device, the locking assembly 2 in this embodiment includes a shell 201 fixed to the left side of the steering wheel 1, a sliding plate 202 is slidably connected to the inner cavity wall on the right side of the shell 201, an extension plate 203 extending to the inner side of the steering wheel 1 is fixed on the top of the sliding plate 202, and a supporting spring 204 is fixed on the left side of the sliding plate 202.

[0034] It should be noted that the provision of the supporting spring 204 is conducive to supporting the limit plate 205, thereby facilitating the positioning of the limit plate 205 through the housing 201, thereby facilitating the displacement of the limit plate 205 and facilitating the stable use of the overall assembly.

[0035] A limiting plate 205 slidably connected to the outer shell 201 is fixed to the left side of the supporting spring 204, a movable plate 206 is fixed to the left side of the limiting plate 205, a sliding channel is opened on the left side of the outer shell 201, a limiting hole connected to the sliding channel is opened on the outer shell 201, the movable plate 206 is adapted to the sliding channel, and the limiting plate 205 is adapted to the limiting hole.

[0036] In this embodiment, the coordinated arrangement of the sliding channel and the limiting hole facilitates the limiting of the limiting plate 205 and the stable sliding of the movable plate 206, thereby facilitating the stable use of the entire assembly and improving the stability of the device.

[0037] See also Figure 3 In order to improve the use effect, the function component 3 in this embodiment includes two front and rear expansion plates 301 slidably connected to the inner side of the steering wheel 1, and expansion plates 302 are fixed on the opposite sides of the two expansion plates 301. A limiting channel is opened on the inner side of the steering wheel 1, and the expansion plate 301 is slidably connected to the steering wheel 1 through the limiting channel. A placement opening connected to the limiting channel is opened on the outer side of the steering wheel 1. The expansion plate 302 is located on the inner side of the placement opening, and the expansion plate 302 is flush with the outer side of the steering wheel 1.

[0038] It should also be noted that the setting of the limiting channel is conducive to limiting the unfolding plate 301, thereby facilitating the stable sliding of the unfolding plate 301 and improving the stability of the device. The setting of the placement port is conducive to the storage of the unfolding tray 302, thereby facilitating the stable use of the device and improving the stability of the device.

[0039] A fixing block 303 is fixed on the inner cavity wall on the right side of the steering wheel 1, and columns 304 plugged into the unfolding plate 301 are fixed on both sides of the fixing block 303. A spring 305 wound around the outside of the column 304 is fixed between the unfolding plate 301 and the fixing block 303. A locking plate 306 is fixed to the bottom of the unfolding plate 301, and a connecting plate 307 is fixed to the top of the extension plate 203. The inner side of the connecting plate 307 is slidably connected to the limiting column 308.

[0040] It can be found that the setting of the plug 304 is conducive to limiting the elastic spring 305, thereby facilitating the improvement of the stability of the component. The setting of the positioning plate 306 is conducive to limiting the action block 309, thereby facilitating the stable use of the component.

[0041] An action block 309 movably connected to the locking plate 306 is fixed on the top of the limiting column 308, a locking opening is opened at the bottom of the locking plate 306, the action block 309 is located inside the locking opening, the action block 309 is a triangular prism structure, and a return spring 310 wrapped around the outside of the limiting column 308 is fixed between the action block 309 and the connecting plate 307.

[0042] In this embodiment, through the structural setting of the action block 309, the movement and resistance of the locking plate 306 drive the reset spring 310 to contract, and at the same time the limiting column 308 moves downward, so that after the action block 309 is moved to the locking mouth, the reset spring 310 supports the action block 309, thereby realizing the reset of the component, which is beneficial to the stable use of the device.

[0043] See also Figure 4 In order to ensure stable use of the device, the transmission assembly 15 in this embodiment includes a connecting frame 1501 fixed to the right side of the connecting plate 14, a fixing column 1502 is fixed on the inner side of the connecting frame 1501, a connecting sleeve 1503 is rotatably connected to the outer side of the fixing column 1502, a fixing sleeve 1504 is fixed to the right side of the connecting sleeve 1503, a movable block 1505 is slidably connected to the right side of the fixing sleeve 1504, and a ring 1506 fixed to the outer side of the adjusting rod 16 is fixed to the right side of the movable block 1505.

[0044] In this embodiment, the front-rear displacement of the connecting plate 14 drives the fixing column 1502 to move forward and backward, so that the adjusting rod 16 rotates, thereby realizing the rotation of the wheel 21, which is beneficial to the stable transmission of the steering force of the device and the stable use of the device.

[0045] See also Figures 5 to 6 In order to improve the stability of the device, the lubrication mechanism 18 in this embodiment includes a protective cover 1801 fixed to the left side of the stabilizing cylinder 17, a storage box 1802 is fixed on the inner side of the protective cover 1801, a pump 1803 is fixed on the top of the storage box 1802, and an input pipe 1804 connected to the adjusting rod 16 is fixed to the output port of the pump 1803.

[0046] It can also be found that through the lubricating liquid setting in the storage box 1802, under the drive of the pump 1803, the lubricating liquid is allowed to flow between the outer side of the adjusting rod 16 and the inner side of the stabilizing cylinder 17, thereby enabling the stable rotation of the adjusting rod 16 and the stabilizing cylinder 17, which is beneficial to the stable use of the device.

[0047] A liquid outlet is provided on the inner side of the adjusting rod 16, and the input pipe 1804 is connected with the adjusting rod 16 through the liquid outlet. The adjusting rod 16 is provided with a plurality of liquid outlets connected with the liquid outlet, and the liquid outlets are connected with the inner cavity of the stabilizing cylinder 17. The bottom of the storage box 1802 is connected with an output pipe 1805 connected with the bottom of the stabilizing cylinder 17. A collecting port is provided at the bottom of the stabilizing cylinder 17, and the output pipe 1805 is connected with the stabilizing cylinder 17 through the collecting port.

[0048] In this embodiment, the provision of the liquid passage port and the liquid outlet port facilitates the stable transmission of the lubricating liquid, thereby facilitating the stable lubrication of the adjusting rod 16 and the stabilizing cylinder 17 by the lubricating liquid, thereby facilitating the improvement of the stability of the device, thereby facilitating the improvement of the use effect of the device.

[0049] The electrical components appearing in the text are all electrically connected to the controller and the power supply. The control method of the present invention is controlled by the controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power supply is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0050] The working principle of the above embodiment is:

[0051] (1) By turning the steering wheel 1, the rotation of the rotating rod 10 is realized through the transmission of the transmission joint 4 and the connecting joint 9, and the front-rear displacement of the displacement rod 13 is realized through the meshing action, thereby driving the connecting plate 14 to move forward and backward. Through the rotation connection setting of the fixed column 1502 and the connecting sleeve 1503, the adjustment rod 16 connected to the vehicle rotation is driven to rotate, and the wheel 21 is driven to rotate through the fixing action of the stabilizing plate 19 and the linkage rod 20 to achieve steering. Through the setting of the motor 7, the gear fixed on the connecting rod 5 is driven to engage and drive. Through the setting of the torque sensor 6 and the electronic control unit 8, the rotation of the motor 7 is stably controlled, thereby achieving steering assistance for the tricycle, which is beneficial to improving the use effect, reducing the vibration force during steering, and improving the stability of hand operation.

[0052] (2) For a road section that is difficult to control, the movable plate 206 is pressed down and the limit plate 205 is slid downward, so that the limit plate 205 is locked with the housing 201, and at the same time, the action block 309 is moved out from the locking plate 306, and the deployment plate 302 is pushed out by the elastic action of the elastic spring 305, thereby extending the force arm of the steering wheel 1, thereby reducing the force required to turn the steering wheel 1, thereby improving the use effect of the device, and after the limit plate 205 is locked upward, the deployment plate 301 is pressed inwardly, so that the action block 309 is squeezed It is then limited by the positioning plate 306 to achieve rapid resetting of the component, thereby improving the overall convenience of use. At the same time, the lubricating liquid in the storage box 1802 is driven by the pump 1803 to pass the lubricating liquid into the adjusting rod 16 through the input pipe 1804, and the lubricating liquid is discharged to between the adjusting rod 16 and the stabilizing cylinder 17 through the setting of the liquid outlet, so that the adjusting rod 16 and the stabilizing cylinder 17 can rotate stably, reduce wear, and be beneficial to improving the steering effect, thereby improving the stability of the device, and the overall device is easy to steer and has a good use effect.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0054] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. An electronic power steering device for a tricycle, comprising a steering wheel (1), characterized in that: The left side of the steering wheel (1) is provided with a locking assembly (2) extending to the inner side thereof, the inner side of the steering wheel (1) is provided with an action assembly (3), the right side of the steering wheel (1) is fixed with a transmission joint (4), the bottom of the transmission joint (4) is fixed with a connecting rod (5), the outer side of the connecting rod (5) is provided with a power-assisting mechanism, the bottom of the connecting rod (5) is provided with a driving assembly, a connecting plate (14) is fixed on the driving assembly, a transmission assembly (15) is provided on the right side of the connecting plate (14), an adjusting rod (16) is fixed on the transmission assembly (15), the outer side of the adjusting rod (16) is rotatably connected with a stabilizing cylinder (17), the left side of the stabilizing cylinder (17) is provided with a lubricating mechanism (18), the outer side of the adjusting rod (16) is fixed with two upper and lower stabilizing plates (19), the inner sides of the two stabilizing plates (19) are fixed with linkage rods (20), and a wheel (21) is rotatably connected between the two linkage rods (20); The power assist mechanism comprises a torque sensor (6) fixed to the outer side of the connecting rod (5), a motor (7) is fixed to the top of the torque sensor (6), an electric control unit (8) is fixed to the top of the motor (7), the drive assembly comprises a connecting joint (9) fixed to the bottom of the connecting rod (5), a rotating rod (10) is fixed to the bottom of the connecting joint (9), a locking sleeve (11) is rotatably connected to the outer side of the rotating rod (10), a fixing cylinder (12) is fixed to the right side of the locking sleeve (11), a displacement rod (13) meshing with the rotating rod (10) is slidably connected inside the fixing cylinder (12), and a connecting plate (14) is fixed to the outer side of the displacement rod (13).

2. The electronic power steering device for a tricycle according to claim 1, characterized in that: The locking assembly (2) comprises a housing (201) fixed to the left side of the steering wheel (1); a sliding plate (202) is slidably connected to the inner cavity wall on the right side of the housing (201); an extension plate (203) extending to the inner side of the steering wheel (1) is fixed to the top of the sliding plate (202); a supporting spring (204) is fixed to the left side of the sliding plate (202); a limiting plate (205) slidably connected to the housing (201) is fixed to the left side of the supporting spring (204); and a movable plate (206) is fixed to the left side of the limiting plate (205).

3. The electronic power steering device for a tricycle according to claim 2, characterized in that: A sliding channel is provided on the left side of the housing (201), a limiting hole communicating with the sliding channel is provided on the housing (201), the movable plate (206) is adapted to the sliding channel, and the limiting plate (205) is adapted to the limiting hole.

4. The electronic power steering device for a tricycle according to claim 2, characterized in that: The action component (3) comprises two front and rear expansion plates (301) slidably connected to the inner side of the steering wheel (1); an expansion plate (302) is fixed on the opposite sides of the two expansion plates (301); a fixing block (303) is fixed on the inner cavity wall on the right side of the steering wheel (1); and plug posts (304) plugged into the expansion plates (301) are fixed on the left and right sides of the fixing block (303); and an elastic spring wrapped around the outer side of the plug post (304) is fixed between the expansion plate (301) and the fixing block (303). A movable spring (305) is provided, a locking plate (306) is fixed at the bottom of the unfolding plate (301), a connecting plate (307) is fixed at the top of the extending plate (203), the inner side of the connecting plate (307) is slidably connected to a limiting column (308), an action block (309) movably connected to the locking plate (306) is fixed at the top of the limiting column (308), and a return spring (310) is fixed between the action block (309) and the connecting plate (307) and is wound around the outer side of the limiting column (308).

5. The electronic power steering device for a tricycle according to claim 4, characterized in that: A limiting channel is provided on the inner side of the steering wheel (1); the unfolding plate (301) is slidably connected to the steering wheel (1) via the limiting channel; a placement opening connected to the limiting channel is provided on the outer side of the steering wheel (1); the unfolding plate (302) is located on the inner side of the placement opening; and the unfolding plate (302) is flush with the outer side of the steering wheel (1).

6. The electronic power steering device for a tricycle according to claim 4, characterized in that: The bottom of the locking plate (306) is provided with a locking opening, the action block (309) is located inside the locking opening, and the action block (309) is a triangular prism structure.

7. The electronic power steering device for a tricycle according to claim 1, characterized in that: The transmission assembly (15) comprises a connecting frame (1501) fixed to the right side of the connecting plate (14); a fixing column (1502) is fixed on the inner side of the connecting frame (1501); a connecting sleeve (1503) is rotatably connected to the outer side of the fixing column (1502); a fixing sleeve (1504) is fixed to the right side of the connecting sleeve (1503); a movable block (1505) is slidably connected to the right side of the fixing sleeve (1504); and a collar (1506) fixed to the outer side of the adjusting rod (16) is fixed to the right side of the movable block (1505).

8. The electronic power steering device for a tricycle according to claim 1, characterized in that: The lubrication mechanism (18) comprises a protective cover (1801) fixed to the left side of the stabilizing cylinder (17); a storage box (1802) is fixed on the inner side of the protective cover (1801); a pump (1803) is fixed on the top of the storage box (1802); an input pipe (1804) connected to the adjusting rod (16) is fixed to the output port of the pump (1803); and an output pipe (1805) connected to the bottom of the stabilizing cylinder (17) is connected to the bottom of the storage box (1802).

9. An electronic power steering device for a tricycle according to claim 8, characterized in that: The inner side of the regulating rod (16) is provided with a liquid outlet, the input pipe (1804) is connected to the regulating rod (16) through the liquid outlet, the regulating rod (16) is provided with a plurality of liquid outlets connected to the liquid outlet, and the liquid outlets are connected to the inner cavity of the stabilizing cylinder (17).

10. The electronic power steering device for a tricycle according to claim 8, characterized in that: A collecting port is provided at the bottom of the stabilizing cylinder (17), and the output pipe (1805) is connected to the stabilizing cylinder (17) through the collecting port. Sealed bearings rotatably connected to the outer side of the adjusting rod (16) are fixed on both the upper and lower sides of the stabilizing cylinder (17).

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